This article is focused on the Court's decision in Hornbach-Baumarkt (Case C-382/16) (Hornbach) which is an important clarification the conditional compatibility arm's length-based domestic transfer pricing legislation with the freedom establishment. Hornbach follows and confirms the previous doctrine formulated in SGI (Case C-311/08). The decision did not follow Advocate General's approach, which would have denied comparability domestic and cross-border situations in transfer pricing cases and, hence, prevent scrutiny domestic transfer pricing legislation under the fundamental freedoms. The authors welcome the requirement that Member States have to grant taxpayers the opportunity to provide evidence of any justification for non-arm's length transactions, with the result that a denial that opportunity through automatic transfer pricing adjustments would render these incompatible with EU Law. In that context, it is further welcomed that commercial justifications may include economic reasons resulting from its position as a shareholder the non-resident company. The Hornbach decision, at least in cases non-arm's length transactions, such as interest-free loans or gratuitous guarantees aimed at replacing equity, clearly suggests that such a shareholder interest in the financial success the foreign subsidiary may serve as such justification.